<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>taobao</title>
    <style>
      .header {
        width: 100%;
      }
      .wrapper {
        width: 1200px;
        height: 35px;
        background: #f5f5f5;
      }
    </style>
  </head>
  <body>
    <div class="header">
      <div class="wrapper"></div>
    </div>
  </body>
</html>
